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Piston type air cylinder

A piston type and cylinder technology, which is applied in variable capacity pump components, liquid variable capacity machines, machines/engines, etc. It can solve problems such as poor sealing performance, rising lubricating oil temperature in air compressors, thermal deformation of cylinder pistons, etc. problem, to achieve the effect of enhancing heat dissipation performance, improving oil scraping effect, and good running-in performance

Inactive Publication Date: 2013-03-27
王伏南
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There will be some problems when the air compressor is used. After a long time of work, the piston of the air compressor cylinder will be deformed by heat, the piston head will swing, the piston ring will lose its normal contact position with the cylinder wall during operation, the sealing performance will be poor, and it will often There will be noise, and at the same time, frequent replacement of piston rings and oil scraper rings, excessive wear will cause up and down jumps in the annular groove, and the temperature of the lubricating oil in the air compressor will rise. The existence of these problems affects normal production.

Method used

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  • Piston type air cylinder
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Embodiment Construction

[0012] The present invention is described below in conjunction with accompanying drawing.

[0013] attached Figure 1-2 It is a piston-type cylinder according to the present invention, which includes a cylinder body 1, a piston 2, and a piston rod 3. The piston 2 is provided with three annular grooves; a piston ring 5 is installed in the first annular groove 4, and a piston ring 5 is installed in the first annular groove 4. 2. The oil scraper ring 8 is installed in the third annular groove 6 and 7; the outer edge surface of the piston ring 5 is provided with an arc-shaped protrusion 9 in contact with the inner wall of the cylinder; the scraper ring installed in the third annular groove 7 The oil ring 8 is a three-lobed oil scraper ring 10; the material of the piston ring 5 and the oil scraper ring 8 is alloy cast iron; the axial gap of the annular groove is 0.05-0.067mm.

[0014] According to the present invention, three annular grooves are arranged on the piston 2, and a pis...

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Abstract

The invention discloses a piston type air cylinder, comprising a cylinder body, a piston and a piston rod, wherein three annular grooves are arranged in the piston; a piston ring is mounted inside the first annular groove; oil scraping rings are mounted inside the second annular groove and the third annular groove; arc bumps in contact with the inner wall of the air cylinder are arranged on the outer edge face of the piston ring; and the oil scraping ring mounted inside the third annular groove is a three-petal type oil scraping ring. According to the scheme provided by the invention, the three annular grooves are arranged in the piston, and the piston ring provided with the arc bumps is mounted inside the first annular groove, so that one line in contact with the air cylinder can be kept when the piston is tilted. Therefore, the sealing property is good; the air cylinder is difficult to scrap; the grinding-in property is good; and the oil scraping rings are mounted inside the second annular groove and the third annular groove, and the three-pedal type oil scraping ring is mounted inside the third annular groove, so that an oil scraping effect is improved, and the heat radiation property is enhanced.

Description

technical field [0001] The invention relates to a cylinder, in particular to a piston cylinder. Background technique [0002] There will be some problems when the air compressor is used. After a long time of work, the piston of the air compressor cylinder will be deformed by heat, the piston head will swing, the piston ring will lose its normal contact position with the cylinder wall during operation, the sealing performance will be poor, and it will often There will be noise, and at the same time, frequent replacement of piston rings and oil wiper rings, excessive wear will cause up and down jumping in the annular groove, and the temperature of the lubricating oil in the air compressor will rise. The existence of these problems affects normal production. Contents of the invention [0003] In view of the above-mentioned technical problems, the object of the present invention is to propose a piston-type cylinder capable of ensuring the sealing performance between the piston...

Claims

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Application Information

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IPC IPC(8): F04B39/12
Inventor 王伏南
Owner 王伏南
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